वेदों की प्राचीनता एवं काल-निर्णय / ओरायन (लोकमान्य बाल गंगाधर तिलक - खगोलीय वैदिक शोध)

PRIMITIVE ARYAN CULTURE AND RELIGION, 421 and when two independent lines of research unexpectedly lead us to the same result, we may very well reject, at least in the present state of our knowledge, the extravagant speculations of Croll and his followers, and, for all practical purposes, adopt the view that the last Glacial epoch closed and the post-Glacial period commenced at about 8000 B. C. From this to the Orion period is an interval of about 3000 years, and it is not at all improbable that the traditions of the ancient home should have been remembered and incorporated into hymns whose origin can be clearly traced to that period. In short, the Vedic traditions, far from being contradictory to the scientific evidence, only serve to check the extravagant estimates re- garding the age of the last Glacial epoch; and if the sober view of American geologists be adopted, both geology and the traditions recorded in the ancient books of the Aryan race will be found alike to point out to a period not much older than 8000 B. C. for the commencement of the post-Glacial era and the compulsory migration of the Aryan races from their Arctic home. And not only Vedic but also Purâṇic chronology, properly understood, leads us to the same conclusion. According to the Purâṇas the earth and the whole universe are occa- sionally subjected to destruction at long intervals of time, the earth by a small and the universe by a grand deluge. Thus we are told that when the god Brahmâ is awake during his day the creation exists; but when at the end of the day he goes to sleep, the world is destroyed by a deluge, and is re-created when he awakes from his sleep and resumes his activity the next morning. Brahmâ's evening and morning are thus syn- onymous with the destruction and the re-creation of the earth. A day and a night of Brahmâ are each equal to a period of time called a Kalpa, and a Kalpa is taken for a unit in measuring higher periods of time. Two Kalpas constitute a nycthemeron (day and night) of Brahmâ, and 360×2=720 Kalpas make